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Commit 948ad1ac authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Michael Ellerman
Browse files

powerpc/pseries: extract of_helpers module 



Extract a new module to share the code between other modules.

There is no functional change.

Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 5ada62b1

arch/powerpc/platforms/pseries/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -2,6 +2,7 @@ ccflags-$(CONFIG_PPC64) := $(NO_MINIMAL_TOC) 
ccflags-$(CONFIG_PPC_PSERIES_DEBUG)	+= -DDEBUG



obj-y			:= lpar.o hvCall.o nvram.o reconfig.o \

			   of_helpers.o \

			   setup.o iommu.o event_sources.o ras.o \

			   firmware.o power.o dlpar.o mobility.o rng.o

obj-$(CONFIG_SMP)	+= smp.o

arch/powerpc/platforms/pseries/of_helpers.c

0 → 100644
+38 −0
Original line number Diff line number Diff line 
#include <linux/string.h>

#include <linux/err.h>

#include <linux/slab.h>

#include <linux/of.h>



#include "of_helpers.h"



/**

 * pseries_of_derive_parent - basically like dirname(1)

 * @path:  the full_name of a node to be added to the tree

 *

 * Returns the node which should be the parent of the node

 * described by path.  E.g., for path = "/foo/bar", returns

 * the node with full_name = "/foo".

 */

struct device_node *pseries_of_derive_parent(const char *path)

{

	struct device_node *parent = NULL;

	char *parent_path = "/";

	size_t parent_path_len = strrchr(path, '/') - path + 1;



	/* reject if path is "/" */

	if (!strcmp(path, "/"))

		return ERR_PTR(-EINVAL);



	if (strrchr(path, '/') != path) {

		parent_path = kmalloc(parent_path_len, GFP_KERNEL);

		if (!parent_path)

			return ERR_PTR(-ENOMEM);

		strlcpy(parent_path, path, parent_path_len);

	}

	parent = of_find_node_by_path(parent_path);

	if (!parent)

		return ERR_PTR(-EINVAL);

	if (strcmp(parent_path, "/"))

		kfree(parent_path);

	return parent;

}

arch/powerpc/platforms/pseries/of_helpers.h

0 → 100644
+8 −0
Original line number Diff line number Diff line 
#ifndef _PSERIES_OF_HELPERS_H

#define _PSERIES_OF_HELPERS_H



#include <linux/of.h>



struct device_node *pseries_of_derive_parent(const char *path);



#endif /* _PSERIES_OF_HELPERS_H */

arch/powerpc/platforms/pseries/reconfig.c

+2 −32
Original line number Diff line number Diff line
@@ -22,37 +22,7 @@ 
#include <asm/uaccess.h>

#include <asm/mmu.h>



/**

 *	derive_parent - basically like dirname(1)

 *	@path:  the full_name of a node to be added to the tree

 *

 *	Returns the node which should be the parent of the node

 *	described by path.  E.g., for path = "/foo/bar", returns

 *	the node with full_name = "/foo".

 */

static struct device_node *derive_parent(const char *path)

{

	struct device_node *parent = NULL;

	char *parent_path = "/";

	size_t parent_path_len = strrchr(path, '/') - path + 1;



	/* reject if path is "/" */

	if (!strcmp(path, "/"))

		return ERR_PTR(-EINVAL);



	if (strrchr(path, '/') != path) {

		parent_path = kmalloc(parent_path_len, GFP_KERNEL);

		if (!parent_path)

			return ERR_PTR(-ENOMEM);

		strlcpy(parent_path, path, parent_path_len);

	}

	parent = of_find_node_by_path(parent_path);

	if (!parent)

		return ERR_PTR(-EINVAL);

	if (strcmp(parent_path, "/"))

		kfree(parent_path);

	return parent;

}

#include "of_helpers.h"



static int pSeries_reconfig_add_node(const char *path, struct property *proplist)

{
@@ -71,7 +41,7 @@ static int pSeries_reconfig_add_node(const char *path, struct property *proplist 
	of_node_set_flag(np, OF_DYNAMIC);

	of_node_init(np);



	np->parent = derive_parent(path);

	np->parent = pseries_of_derive_parent(path);

	if (IS_ERR(np->parent)) {

		err = PTR_ERR(np->parent);

		goto out_err;